PSI - Issue 50

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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ScienceDirect

Procedia Structural Integrity 50 (2023) 163–169

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Abstract The main aim of work is experimental research and description of the mechanical behavior regularities and strength properties degradation of a fibrous structural composite material under combined mechanical and thermal effects and aging in aggressive (operational) environments. Data on the various environments influence such as process water, seawater and machine oil at different durations (15, 30, 45 days) and temperatures (22º С , 60º С and 90º С ) on the destruction processes of the composite and the realization of various mechanisms of damage accumulation on during quasi-static tests for interlayer shear. The paper presents the experimental data obtained by the acoustic emission technique. The results of a sample's microstructure study obtained using a stereo microscope before and after thermal and moisture aging in aggressive environments. © 202 3 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers . Keywords: thermo-oxidative aging, mechanical behavior, composite materials, acoustic emission. 1. Introduction With the wide using of composite materials the analysis issues of the conditions of products destruction and survivability are particular importance. The topical subject is study and analyze the effect of high and low (operational) temperatures on the mechanical properties and destruction mechanisms of composite materials. It is also important to establish the temperature 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022) Study of the thermal and moisture aging effect on the residual mechanical properties of a structural composite material Lobanov Dmitriy S. a , Lunegova Ekaterina M. a * a Centre of Experimental Mechanics, Perm National Research Polytechni с University, 29 Komsomolsky AVE, Perm 614000, Russia Abstract The main aim of work is experimental research and description of the mechanical behavior regularities and strength properties degradation of a fibrous structural composite material under combined mechanical and thermal effects and aging in aggressive (operational) environments. Data on the various environments influence such as process water, seawater and machine oil at different durations (15, 30, 45 days) and temperatures (22º С , 60º С and 90º С ) on the destruction processes of the composite and the realization of various mechanisms of damage accumulation on during quasi-static tests for interlayer shear. The paper presents the experimental data obtained by the acoustic emission technique. The results of a sample's microstructure study obtained using a stereo microscope before and after thermal and moisture aging in aggressive environments. © 202 3 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers . Keywords: thermo-oxidative aging, mechanical behavior, composite materials, acoustic emission. 1. Introduction With the wide using of composite materials the analysis issues of the conditions of products destruction and survivability are particular importance. The topical subject is study and analyze the effect of high and low (operational) temperatures on the mechanical properties and destruction mechanisms of composite materials. It is also important to establish the temperature 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022) Study of the thermal and moisture aging effect on the residual mechanical properties of a structural composite material Lobanov Dmitriy S. a , Lunegova Ekaterina M. a * a Centre of Experimental Mechanics, Perm National Research Polytechni с University, 29 Komsomolsky AVE, Perm 614000, Russia

* Corresponding author. Tel.: +7-909-72-95-995; fax: +7-342-219-8732. E-mail address: cem.zubova@mail.ru * Corresponding author. Tel.: +7-909-72-95-995; fax: +7-342-219-8732. E-mail address: cem.zubova@mail.ru

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers 10.1016/j.prostr.2023.10.037